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Compare/A04 vs A05

A04 vs A05

A04 (Other bacterial intestinal infections) compared with A05 (Other bacterial foodborne intoxications, not elsewhere classified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Can these codes be reported together?

No — do not report together. A04 carries an Excludes1 note covering A05: “bacterial foodborne intoxications, NEC (A05.-)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

A04Other bacterial intestinal infectionsA05Other bacterial foodborne intoxications, not elsewhere classified
Billing statusNon-billable header

Report instead: A04.0, A04.1, A04.2, A04.3, A04.4

Non-billable header

Report instead: A05.0, A05.1, A05.2, A05.3, A05.4

ClassificationA00-B99 — Certain Infectious and Parasitic Diseases (A00-B99)A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99)
DefinitionOther bacterial intestinal infections is a non-billable ICD-10-CM category code (A04).Other bacterial foodborne intoxications, not elsewhere classified is a non-billable ICD-10-CM category code (A05).
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources